[1] Department of Dermatology, Foresterhill Aberdeen Royal Infirmary
[2] Service de Dermatologie Général et Oncoligique, Université de Versailles-Saint-Quentin, Hôpital Ambroise Paré, 92104 Boulogne Cedex
[3] St Johns Institute of Dermatology, St Thomas' Hospital, SE1 7EH London, Lambeth Palace Road
[4] Department of Dermatology, Academic Medical Center, 1100 DD Amsterdam
[5] St Johns Institute of Dermatology (Kings College), Guys Hospital, SE1 9RT London, Tower Wing
[6] Department of Dermatology A0-235, Academic Medical Center, University of Amsterdam, 1100 DE Amsterdam
[7] Department of Dermatology, University of Rome 'Tor Vergata', PTV - Policlinico Tor Vergata, 00133 Rome
[8] Service Dermatologie 1, Hôpital Saint-Louis
[9] Photobiology Unit, Ninewell Hospital and Medical School
[10] Dermatology Centre, University of Manchester, Hope Hospital, Salford
[11] Hospital for Children and Adolescents, Research Laboratory, 00029 HUS Helsinki
[12] Centro Studi GISED, Ospedali Riuniti, 24128 Bergamo
[13] Service de Dermatologie, Hôpital d'Archet, 06202 Nice, 151, route de St-Antione-de-Ginestière
[14] Dermatology and Allergology, Central Hospital of Päijät - Häme, 15850 Lahti
[15] Department of Dermatology, University Hospital Nijmegen
[16] Klinik und Poliklinik für Dermatologie, Technische Universität München, 80802 München
[17] Clinica Dermatologica presso Ospedale Civile Maggiore, 37126 Verona
[18] Department of Dermatology, Medical University of Vienna, AKH-E07, 1090 Vienna
[19] Department of Dermatology and Allergology, University of Szeged, 6720 Szeged
[20] Department of Dermatology, Campus Kiel, Schleswig-Holstein University, 24105 Kiel
[21] Dermatologikum Hamburg, 20354 Hamburg
[22] Rheumatologie und klinische Immunologie, Universitätsklinikum Charité, 10117 Berlin
[23] Dept. of Biomedical and Surgical Science, Section of Dermatology, University of Verona, 37126 Verona
[24] St John's College
[25] Central Dermatology, St Louis, MO 63117
[26] 00193 Rome
[27] Texas Dermatology Associates, P.A., Dallas, TX 75230
[28] Department of Dermatology, Erasmus Medical Center
[29] Charité Campus Benjamin Franklin, Charité Centrum 04 für Therapieforschung, Institut für klinische Pharmakologie und Toxikologie, 12200 Berlin
[30] Department of Clinical Health Psychology, Mercy University Hospital, Cork, Grenville Place
[31] Department of Dermatology, Erasmus Medical Center, 3000 CA Rotterdam
[32] Department of Standing Commission for Clinical Practice Guidelines, Association of the Scientific Medical Societies in Germany (AWMF), Philipps-Universität Marburg, 35043 Marburg, Baldingerstraße
[33] Division of Evidence Based Medicine (dEBM), Klinik für Dermatologie, Campus Charité Mitte, D - 10117 Berlin